Terminal bank for selectors



J. N. REYNOLDS.

TERMINAL-BANK FOR SELECTOBS. APPLICATION FILED FEB. 5. 19m

1,367,833. Patented Feb.8,'1921.

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UNITED STATES PATENT oFricE.

JOHN NEWBERRY REYNOLDS, 0F GREENW'ICTI, CONNECTICUT, ASSIGNOR TO.WEST- ERN ELECTRIC COMPANY, INCORPORATED, OF NEW' YORK, N. Y., A CORPORATION OF NEW YORK.

TERMINAL BANK FOR SELECTORS.

Specification of Letters Patent.

Patented Feb. 8, 1921.

To all whom it may concern:

Be it known that 1, JOHN. NEWBERRY RnYNoLos, a citizen of the United States, residing at Greenwich, in the county of Fairfield and State of Connecticut, have invented certain new and useful Improvements in Terminal Banks for Selectors, of which the following is a full, clear, concise, and exact description.

This invention relates to selector switches such as are used'in automatic telephone exchanges, and more particularly to the terminal bank thereof.

It is the object of the invention to provide a terminal bankwhich combines the advantages of the panel with those of the rotary bank; that is to say, a bank which is cheap to manufacture and which cooperates with a brush having a simple rotary movement.

The word panel or the expression panel type is used in the specification and in the claims with reference to a terminal bank of known construction essentially characterized by the formation into compact units.

of superposed insulating sheets and metal strips each of which has a plurality of integral terminals formed thereon all as shown for example in Patent #1,127,741 issued to Dixon February 9, 1915.

In the drawing, Figure 1 is an end View and Fig. 2 is a front View of a portion of a terminal bank constructed in accordance with the present invention.

In the drawings, 10 designates punchings of sheet metal having lugs adapted to form contact terminals t, t, 25 A line may have only a single terminal 25 or may consistof what are known in telephony as the tip, ring and sleeve terminals t, t, t". The sheets or strips of metal, after being punched into form, are stacked up alternately with paper coated with a plastic insulating compound. The resultant elements consisting of the paper sheets 16, the compound applied thereto and the metal sheets 10 are then formed up in sections of relatively few strips, in accordance with the process described in Patent No. 1,127,741 granted to A. Dixon, February 9, 1915. Eachsection is then placed in a holder 11 in which it is fastened by a screw 12 surrounded by a bushing 15. The resultant units are then secured together by bolts 13. it will be noted that the holders l1 taper'toward the free ends of the terminals a, so that when assembied the units take substantiaily the form of a circle in the center of which a brush shaft (not shown) is mounted to rotate. This shaft carries brushesavhich wipe over the sides of the lugs e5, 25", 25 along the dotted line shown.

What is claimed is:

1. A terminai bank comprising a plurality of panel type multiple-terminal units, said units being arranged substantially in a cyiindrical. form, the terminals of said units being multipled in a direction parallel to the axis of the cylinder.

2 A terminal bank comprising aplurality of flat faced panel type multipleterminal units, the faces of said units forming a polygonal prism, the terminals of said units being multipled in a direction parallel to the axis of the prism.

3. A terminal bank comprising a plurality of panel type multiple-terminal units, each having a plurality of rows of equivalent terminals, the corresponding rows of terminals in the several units being substantially in the form of circles and the termi nals of said units being multipled in a direction parallel to a line extending through the centers of said circles.

at. A terminal bank comprising a plurality of panel type multiple-terminal units, said units being secured together side-byside substantially in the form of a cylinder, the terminals of said units being multipled in a direction parallel to the axis of the cylinder.

5. A terminal bank comprising a plurality of panel type multiple-terminal units and tapered holders for said units, said units being secured by said tapered holders substantially in the form of a cylinder, the terminals of said units being multipled in a direction parallel to the axis of the cylinder.

6. A terminal bank comprising a plurality of panel type multiple-terminal units, said units comprising superposed insulating sheets and metal strips, each said strip having a plurality of integral terminals formed thereon, all of the said strips extending in parallel directions, the corresponding terminals on the several strips being placed in rows, and tapered holders for securing said units together in the form of a polygonal prism, the corresponding rows of terminals in the several units being in one plane and substantially in the form of a circle. 10

In Witness whereof, I hereunto subscribe my name this 2nd day of February, A. D. 1917.

JOHN NEVVBERRY REYNOLDS. 

